82757779452 has 72 divisors (see below), whose sum is σ = 221988574080. Its totient is φ = 25939293600.

The previous prime is 82757779451. The next prime is 82757779463. The reversal of 82757779452 is 25497775728.

82757779452 is a `hidden beast` number, since 8 + 2 + 7 + 577 + 7 + 9 + 4 + 52 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 82757779452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82757779451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 798174 + ... + 895877.

It is an arithmetic number, because the mean of its divisors is an integer number (3083174640).

Almost surely, 2^82757779452 is an apocalyptic number.

It is an amenable number.

82757779452 is an abundant number, since it is smaller than the sum of its proper divisors (139230794628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82757779452 is a wasteful number, since it uses less digits than its factorization.

82757779452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694143 (or 1694138 counting only the distinct ones).

The product of its digits is 69148800, while the sum is 63.

The spelling of 82757779452 in words is "eighty-two billion, seven hundred fifty-seven million, seven hundred seventy-nine thousand, four hundred fifty-two".